In this video i show you how i do the valleys on a shingle roof many roofers cut the shingles across because they say it s safer no one of this affirmatio.
Metal vs shingle roof valley.
As the asphalt shingles are installed over the roof deck the shingles are extended into the valley.
Understanding different types of roofing valleys.
If water does happen to get under the shingles it runs down the valley metal.
That flashing is left exposed so the roof has visible lines of metal running down the valley.
Metal roofing costs about twice as much initially but after about 15 years metal roofing is actually 50 cheaper.
The water runs down the shingles.
However these shingles are not run entirely through the valley area but rather the center of the metal valley is left exposed.
Shingles look old and worn within 5 7 years while metal roofing will have a 30 year paint.
An open metal roof valley.
Asphalt shingle roofing is a dominant material for residences.
Some manufactures recommend using ice and water shield instead of valley metal.
A roof valley is a channel created where a roof changes direction or angles.
What are roof valleys.
Usually a v or w shaped metal piece is placed in the valley to channel water off your roof.
However metal roofing is surging in popularity as more aesthetic options become available.
The above photos show a closed woven roof valley vs.
These items can be fabricated in many different profiles.
Metal roofing vs shingles.
With less friction on steel than on a shingle snow ice and heavy rain will shed quicker out of an open metal valley leaving less chance of a leak.
Open valley shingle installation an open valley relies on metal flashing for protection.
The metal is usually pre painted to best complement the shingles color blend.
And while some homeowners may prefer the aesthetics of a closed valley the heavier and thicker the shingle the less likely it is to lie flat across a joint.
From our experience open metal valleys seem to perform better for 2 main reasons.
After 30 years asphalt shingles will cost you about 3 times the price of a metal roof.
What s the difference between an asphalt shingle and metal roof.
This is particularly important on lower sloped roofs 6 12 and less metal seems more durable than shingles in a.
For an open valley a sheet of metal usually steel sometimes copper is fastened to the roof deck.
Some homeowners do not like the look of open valleys while others feel the metal accentuates the roof s shape particularly if copper or painted flashing is used.
Now there are metal shingles and panels that imitate materials.